#8A6448

CSS

:root {
  --wild-horses: #8a6448;
  --wild-horses-rgb: 138 100 72;
  --wild-horses-oklch: oklch(0.536 0.064 57.3);
}

.element {
  color: var(--wild-horses);
  background-color: hsl(25 31% 41%);
  border-color: oklch(0.536 0.064 57.3);
}

Tailwind CSS v4

@theme {
  --color-wild-horses: #8a6448;
  --color-wild-horses-50: #fff1e3;
  --color-wild-horses-100: #f9e3d3;
  --color-wild-horses-200: #eaceba;
  --color-wild-horses-300: #d1b097;
  --color-wild-horses-400: #bc957a;
  --color-wild-horses-500: #a77c5c;
  --color-wild-horses-600: #8d694e;
  --color-wild-horses-700: #71543e;
  --color-wild-horses-800: #543d2d;
  --color-wild-horses-900: #3b2a1e;
  --color-wild-horses-950: #24170e;
}

SCSS

$wild-horses: #8a6448;
$wild-horses-rgb: 138, 100, 72;
$wild-horses-light: mix(#fff, $wild-horses, 20%);
$wild-horses-dark: mix(#000, $wild-horses, 20%);

.element {
  color: $wild-horses;
  box-shadow: 0 0 0 2px rgba($wild-horses, 0.35);
}